Problems Of Conservation: Oil

Problems of Conservation - Soil From the series Environmental Studies Series Distributed by Encyclopedia Britannica Educational Corp; 310 S Michigan Ave; Chicago ; IL; 60604; Tel. (800)621-3900 (800)554-9862 (312)347-7900DC: EBEC Produced by Encyclopedia Britannica Educational Corp; 310 S Michigan Ave; Chicago ; IL; 60604; Tel. (800)621-3900 (800)554-9862 (312)347-7900PC: EBEC Year published 1969 Grade Level: J H Distributed on media: 1 videocassette (14 min.), 1/2 in.; 1 videocassette (u-matic) (14 min.), 3/4 in.; 1 film reel (14 min.), 16 mm. Color?Color; B & W Length: 14 MIN Library of Congress Registration 76-704834 Description: Discusses the nature of soil, what it is and how it was formed. Illustrates the damaging effects of water and wind erosion when the ground cover of vegetation is stripped away and the loss of nutrients in the soil. Describes the origin of the U S Soil Conservation Service which was established by Congress to help combat these problems. Shows on-the-spot examples of its technical assistance of projects that range from tour plowing to land-use planning. Topics: Science,-Natural-General; Biology,-Ecology-Soil-Conservation; Conservation-And-Natural-Resources; Earth-Science-General; Earth-Science-Geology